Does it look similar to the silicone around the overflow? That just doesn’t look like factory work to me. I could be wrong, of course. I’m not trying to dog your tank, hope you dont take it that way. If you have it setup, or intend on setting it up, I truly hope all goes well.
If I had to take a guess, Id say it leaked in That corner and he cut the frame to add silicone. How do the other 4 corners look? Do they all have the same amount of silicone Inside the frame?
Ive been in the hobby almost 15 years and have bought several used tanks and they all let me down eventually from leaks. I finally came to the conclusion that the stuff that would be living in the tank would cost several times over what a brand new factory tank would cost. It’s just not worth the risk. I Had used 30 cube blow a seam and completely empty at least 1k of livestock on the floor while i was away. I dont even want to talk on how much the flooring cost to replace. All over a couple Hundred bucks I could have paid for a new one. The peace of mind is worth that to Me. 30 gallons was a ton of water draining out my floor. 60 would be a rough rough day. At a minimum, take it up to a respectable fish stoRe and have them give you their blessings on it.
Ive actually been searching for a 92 marineland cube, but rumor has it, they are completely getting out of the “large” aquarium manufacturing business (according to a few sources). Can’t find a 92 anywhere, Ive seen a few frameless 6o marineland corner overflow cubes at distributor’s for $300. Framed 6o rr cubes are even cheaper, 250ish. But I’m told once those are gone, that will be the end of em.
Anyway, good luck whichever you decide. I would buy a brand new one if it were me. If you just can’t, Id wait until you can. Unless your planning on keeping the tank in the garage or something.
